nfs-utils crossmnt/fsid bug

["J. Bruce Fields" <bfields@fieldses.org>]

With an exports entry like

	/exports *.citi.umich.edu(rw,crossmnt,fsid=0)

and some other stuff mounted under /exports, I get an odd situation
where listing /exports/submnt/ shows me the contents of /exports/.

I looks to me like what's happening is that the new code to
automatically export filesystems under crossmnt exports is exporting
those directories with the fsid option turned on, with the result that
the root of each of those subdirectories ends up with the same
filehandle as the root of /exports, and the hilarity ensues.  But I
haven't tried a patch yet.

Does that make sense?  I assume we should just clear the fsid flag on
submounts, as it's never going to make sense, and leave the logic
otherwise intact.

--b.

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